To set the Default Domain on Windows 7. Run GPedit.msc from CMD prompt. (CTL+SHIFT+ENTER for Admin since I don’t run as admin all the time.) Go to Computer ConfigurationAdministrative TemplatesSystemLogon called “Assign a default domain for logon“. Enable the policy, enter your domain’s name. I used the FQDN with success.
Set Default Domain – Windows 7
Cloud / Sec / Labs 